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The paper surveys uncertainty quantification (UQ) for large language models (LLMs) and proposes UQ-Net, a unified framework that combines Bayesian modeling, calibration, conformal prediction, and selective decision rules. A key claimed contribution is multi-episode uncertainty aggregation (Eq. 2) for agentic LLM workflows in software engineering (SE). The paper argues that disentangling epistemic and aleatoric uncertainty, integrating anomaly detection, and enabling selective prediction can improve safety and reliability. It reports case-study evidence (medical diagnosis and code generation) and synthetic experiments, claiming improved calibration (e.g., ECE 0.12 vs 0.25), 15–20% error reduction over baselines, 18% gains in multi-episode task sequencing, and 23% more vulnerabilities found via red teaming. The authors identify gaps in current practice (e.g., misalignment of entropy/consistency with factuality, lack of multi-episode benchmarks) and call for standardized, context-aware datasets and human-in-the-loop evaluations.
Cross‑Modal Consistency: 20/50
Textual Logical Soundness: 12/30
Visual Aesthetics & Clarity: 12/20
Overall Score: 44/100
Detailed Evaluation (≤500 words):
Visual ground truth (image‑first):
• Figure 1: Single scatter/line plot; axes “System Input X/Y”; green vs red points; dashed linear fit; extrapolation looks unreliable.
• Figure 2(a): Panel of divergent LLM arithmetic answers with scores (e.g., 0.69, −0.31) and small bar charts.
• Figure 2(b): Cartoon of recommendation network; probabilities P(Cat)=0.2, P(Dog)=0.8; novel input symbol.
• Figure 3: Line chart “Total Number of Publications… (2010–2025)” rising steeply.
• Figure 4(a): Mind‑map workflow: Data/Model → Training Algorithm → Trained Model + Test Data → outputs (Prediction, Biases, Uncertainty, Label Noise).
• Figure 4(b): Selective‑prediction flow; decision g(x)≥τ; accuracy‑coverage curve; p(y|x) sketch.
• Figure 5: Car/Truck training images; inference panels with 90%/92% “confidence”; deer flagged “UNCERTAIN”.
1. Cross‑Modal Consistency
• Major 1: Figure 4 is described as a multi‑episode, red‑teaming UQ framework, but visuals are generic risk/selection cartoons. Evidence: “Figure 4 illustrates a detailed … multi‑episode, red‑teaming environment.” (Sec 4.1) vs Fig. 4(a,b) labels.
• Major 2: Claimed ECE result tied to wrong table. Evidence: “achieving an Expected Calibration Error (ECE) of 0.12 … as shown in Table 1.” (Sec 4.1). Table 1 is a literature summary, not experiment results.
• Major 3: Placeholder citation. Evidence: “as conceptualized in Figure ??” (Sec 4, first paragraph).
• Major 4: Table mismatch. Evidence: Title “Table 2: Comparison of UQ Performance Metrics Across Methods” yet the table columns are “Area / Future Directions / src.” (Sec 4.1).
• Minor 1: Figure 3 trend is used to claim “publication trend on UQ (Figure 4)” (Sec 4.3) – wrong figure number.
• Minor 2: Negative “confidence” value (−0.31) in Fig 2(a) is unexplained in text, risking confusion.
2. Text Logic
• Major 1: Flagship improvements (15–20% calibration/error reduction) lack verifiable, consistent evidence. Evidence: “reduces predictive error by 15–20% relative to baselines.” (Abstract) with no matching quantitative figure/table.
• Major 2: “Multi‑episode modeling improved … 18%” has no experiment details (dataset, metrics, variance) and no aligned figure/table. Evidence: “improved task sequencing accuracy by 18%” (Sec 4.1).
• Minor 1: Section duplication/overlap (Sec 2.1 and 2.5 both titled about LLM uncertainty) muddles scope.
• Minor 2: Some claims rely on news/system‑card reports for GPT‑5 rather than peer‑reviewed evidence.
3. Figure Quality
• Minor 1: Several panels (Fig 2 and Fig 4) use small icons/text that are hard to read at print size; add larger fonts/legends.
• Minor 2: Fig 5 lacks a legend explaining how “confidence” is computed; unclear thresholding.
• Comprehension probe: Figures 4–5 need clearer call‑outs (definitions of g(x), τ, calibration method) to be self‑contained.
Key strengths:
• Topical and timely survey; clear decomposition of epistemic vs aleatoric with standard equations.
• Useful conceptual visuals for selective prediction and risk‑aware decision rules.
• Practical emphasis on SE/agentic settings and human‑in‑the‑loop validation.
Key weaknesses:
• Multiple figure/table misreferences and placeholder (“Figure ??”) break the evidence chain.
• Core quantitative claims lack aligned, reproducible results.
• Overreliance on conceptual diagrams; missing ablations, datasets, metrics, and uncertainty calibration plots (reliability diagrams, coverage vs risk).
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The paper introduces UQ-Net, a novel framework for uncertainty quantification (UQ) in large language models (LLMs), addressing the critical need for reliable decision-making in high-stakes domains like software engineering. The authors identify the limitations of existing LLMs, such as overconfidence and sensitivity to out-of-distribution data, and propose UQ-Net as a solution that combines Bayesian modeling, calibration techniques, conformal prediction, and selective decision rules. This integration aims to disentangle epistemic uncertainty (from model parameters) and aleatoric uncertainty (from data noise), enhancing the trustworthiness of LLMs in tasks requiring high reliability. The paper also emphasizes the importance of context-aware datasets and standardized metrics for evaluating UQ methods, advocating for human-in-the-loop evaluations to align these methods with real-world deployment needs. Through case studies in medical diagnosis and code generation, the authors demonstrate UQ-Net's potential to improve calibration and reduce predictive errors, contributing to the development of trustworthy AI systems.
I find several aspects of this paper to be particularly strong. The most notable is the introduction of UQ-Net, a unified probabilistic framework that combines multiple techniques to address uncertainty quantification in LLMs. The integration of Bayesian modeling, calibration, conformal prediction, and selective decision rules is a novel approach that allows for a more comprehensive understanding of both epistemic and aleatoric uncertainties. This is a significant step forward, as it moves beyond simple point estimates and provides a more nuanced view of model confidence. The paper's focus on software engineering applications is also a strength. By addressing the specific challenges of uncertainty in this domain, the authors highlight the practical relevance of their work. The inclusion of multi-episode interaction modeling is another positive aspect, as it allows the framework to capture the historical context in iterative software engineering workflows, which is crucial for real-world applications. The use of red teaming for safety validation adds an extra layer of rigor to the evaluation process, demonstrating the authors' commitment to responsible AI development. Furthermore, the paper's call for context-aware datasets and standardized metrics for uncertainty quantification is a valuable contribution to the field. This highlights the need for more robust evaluation practices and encourages the community to move towards more reliable and comparable assessments of uncertainty quantification methods. Finally, the reported improvements in calibration and predictive error in the case studies provide empirical evidence for the effectiveness of the proposed framework, suggesting that UQ-Net has the potential to significantly improve the reliability of LLMs in safety-sensitive applications.
Despite the strengths, I have identified several weaknesses that significantly impact the paper's overall quality and clarity. First, the paper suffers from a lack of clarity in its writing and organization. The flow of ideas is often disjointed, making it difficult to follow the authors' line of reasoning. For example, the transitions between different sections and paragraphs are not always smooth, and the connections between concepts are not always clearly articulated. This lack of clarity is further exacerbated by the presence of numerous grammatical errors and typos throughout the text. These errors, while seemingly minor, detract from the overall professionalism of the paper and make it more difficult to understand the authors' intended meaning. For instance, I noted errors such as "inteligent" instead of "intelligent" and "ilustration" instead of "illustration" in the abstract alone. The inconsistent use of abbreviations also contributes to the lack of clarity. While the authors introduce abbreviations like UQ, LLM, and SE, they are not always used consistently throughout the paper, and in some cases, they are used before being fully defined. This inconsistent use of abbreviations can be confusing for the reader and makes it more difficult to follow the authors' arguments. Furthermore, the paper's structure is not always logical. The placement of the "Implications and Opportunities" section (Section 3.2) before the "Results and Contributions" section (Section 4) is unusual and disrupts the natural flow of the paper. Typically, results and contributions are presented before discussing their implications. This unconventional structure makes it harder to understand the context and motivation behind the implications being discussed. Another significant weakness is the lack of detail in the methodology section. While the paper introduces UQ-Net as a novel framework, the description of its components and their integration is not sufficiently detailed. For example, the paper mentions the use of Bayesian modeling, calibration, and conformal prediction, but it does not provide enough information on how these techniques are specifically implemented and combined within the UQ-Net framework. This lack of detail makes it difficult to fully understand the proposed method and to reproduce the results. The paper also lacks a thorough discussion of the limitations of the proposed approach. While the authors mention some limitations in the future directions section, they do not provide a comprehensive analysis of the potential drawbacks and challenges of UQ-Net. For example, the paper does not discuss the computational cost of the framework or its sensitivity to different types of data. Finally, the paper's experimental evaluation is not as robust as it could be. While the authors present case studies in medical diagnosis and code generation, they do not provide enough detail on the experimental setup and the specific datasets used. The lack of detailed experimental information makes it difficult to assess the validity of the results and to compare them with other methods. The paper also lacks a thorough comparison with existing uncertainty quantification techniques. While the authors mention some related work, they do not provide a detailed analysis of how UQ-Net compares to these existing methods in terms of performance, computational cost, and applicability. This lack of comparison makes it difficult to assess the novelty and significance of the proposed framework. The confidence level for each of these weaknesses is high, as they are all supported by direct evidence from the paper.
Based on the identified weaknesses, I recommend several concrete improvements. First and foremost, the authors should thoroughly revise the paper for clarity and coherence. This includes improving the flow of ideas, correcting grammatical errors and typos, and ensuring consistent use of abbreviations. The authors should also reorganize the paper to follow a more logical structure. Specifically, the "Implications and Opportunities" section should be moved to after the "Results and Contributions" section. This will ensure that the implications are discussed in the context of the presented results. Furthermore, the methodology section needs to be significantly expanded to provide more detail on the implementation of UQ-Net. This includes providing more information on how the different components of the framework are integrated and how the specific parameters are chosen. The authors should also include a more thorough discussion of the limitations of the proposed approach. This includes discussing the computational cost of the framework, its sensitivity to different types of data, and any other potential drawbacks. The experimental evaluation also needs to be improved. This includes providing more detail on the experimental setup, the specific datasets used, and the evaluation metrics. The authors should also include a more thorough comparison with existing uncertainty quantification techniques. This comparison should include a discussion of the performance, computational cost, and applicability of each method. In addition to these specific recommendations, I suggest that the authors consider the following general principles for improving the clarity and rigor of their work: 1. Use clear and concise language. Avoid jargon and technical terms whenever possible. 2. Provide sufficient context for your arguments. Make sure that the reader understands the motivation behind your work and the significance of your findings. 3. Be precise and accurate in your descriptions. Avoid vague or ambiguous language. 4. Use appropriate formatting and organization. Make sure that your paper is easy to read and navigate. 5. Proofread your work carefully. Make sure that your paper is free of grammatical errors and typos. By following these principles, the authors can significantly improve the quality and clarity of their paper and make it more accessible to a wider audience.
Several questions arise from my analysis of this paper. First, I am curious about the specific implementation details of the Bayesian modeling component within UQ-Net. The paper mentions the use of Bayesian methods to distinguish epistemic and aleatoric uncertainties, but it does not provide enough information on how these methods are specifically implemented. For example, what specific Bayesian techniques are used, and how are the prior distributions chosen? Second, I would like to know more about the specific calibration techniques used in UQ-Net. The paper mentions the use of calibration methods, but it does not provide enough detail on how these methods are applied. For example, what specific calibration algorithms are used, and how are they integrated with the other components of the framework? Third, I am interested in the specific details of the conformal prediction component of UQ-Net. The paper mentions the use of conformal prediction for systematic uncertainty assessment, but it does not provide enough information on how this technique is implemented. For example, what specific conformal prediction algorithms are used, and how are the confidence scores calculated? Fourth, I would like to understand the specific criteria used for selective prediction in UQ-Net. The paper mentions the use of selective decision rules, but it does not provide enough detail on how these rules are determined. For example, what specific thresholds are used, and how are these thresholds chosen? Finally, I am curious about the specific datasets used in the case studies. The paper mentions the use of synthetic datasets simulating SE tasks, but it does not provide enough detail on the characteristics of these datasets. For example, what specific tasks are simulated, and what are the key features of the datasets? These questions target core methodological choices and seek clarification of critical assumptions, which I believe are essential for a complete understanding of the paper.